So you still have “openxr for windows mixed reality” installed, just not the dev tool, right? Just double checking, about to try it without open xr dev tool (i think its the same as unchecking custom though, which i’ve tried)
EDIT: tried uninstalling openxr dev tools… i cant tell if MR is on or not, but, the frame rate was higher like 40ish fps near chicago), but it was stuttery, not smooth at all.